s=[10,22,3,'hello',4.3,["16.3",11]]
a=[2,3,4,5,6,7]
s[5][0]=1
print(s)
print(len(s))
s[0:3]=1,33,99
s.extend(a)
print(s)
b=s
b.clear()
print(b)
print(s)